Must prevent interference between safety systems in nuclear power plants in Vietnam

Must prevent interference between safety systems in nuclear power plants in Vietnam (Internet image)

Article 17 of Circular 30/2012/TT-BKHCN stipulates that interference between safety systems or between redundant components of a system shall be prevented by means such as physical separation, electrical isolation, functional independence and independence of data transfer. The safety system equipment of the safety system, including cables and raceways, shall be readily identifiable in the plant for each redundant safety system equipment. Safety systems must not be shared between generating units unless this contributes to safety enhancement. Safety system support features and items related to safety may be shared between generating units, unless it would increase either the likelihood of an accident or the consequences of an accident.

In addition, Article 19 of Circular 30/2012/TT-BKHCN stipulates that the operational limits and conditions shall be established in the design of the nuclear power plant, including:

- The safety limits;

- The limits to safety systems;

- The operational limits and conditions for operational state;

- The system constraints and control procedure constraints on the processes important to safety;

- The requirements for surveillance, maintenance, testing and inspection to ensure that structures, systems and components function as intended in the design, to comply with the requirement for optimization on the ALARA principle;

- The operational configurations, including operational restrictions in response to the failure of safety systems or systems related to safety;

- The actions and completion times for actions in response to deviations from the operational limits and conditions.

More details can be found in Circular 30/2012/TT-BKHCN, which comes into force from February 11, 2013.  

Le Vy

>> CLICK HERE TO READ THIS ARTICLE IN VIETNAMESE